SUBROUTINE BDI1_UNMAP( NARG, ARGS, OARG, STATUS ) *+ * Name: * BDI1_UNMAP * Purpose: * Service FileItemUnmap requests from the BDI system for HDS files * Language: * Starlink Fortran * Invocation: * CALL BDI1_UNMAP( NARG, ARGS, OARG, STATUS ) * Description: * Services BDI unmap requests for HDS files. * Arguments: * NARG = INTEGER (given) * Number of method arguments * ARGS(*) = INTEGER (given) * ADI identifier of method arguments * OARG = INTEGER (returned) * Output data * STATUS = INTEGER (given and returned) * The global status. * Examples: * {routine_example_text} * {routine_example_description} * Pitfalls: * {pitfall_description}... * Notes: * {routine_notes}... * Prior Requirements: * {routine_prior_requirements}... * Side Effects: * {routine_side_effects}... * Algorithm: * {algorithm_description}... * Accuracy: * {routine_accuracy} * Timing: * {routine_timing} * External Routines Used: * {name_of_facility_or_package}: * {routine_used}... * Implementation Deficiencies: * {routine_deficiencies}... * References: * BDI Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/bdi.html * Keywords: * package:bdi, usage:private * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 9 Aug 1995 (DJA): * Original version. * {enter_changes_here} * Bugs: * {note_any_bugs_here} *- * Type Definitions: IMPLICIT NONE ! No implicit typing * Global Constants: INCLUDE 'SAE_PAR' ! Standard SAE constants INCLUDE 'ADI_PAR' * Arguments Given: INTEGER NARG, ARGS(*) * Arguments Returned: INTEGER OARG * Status: INTEGER STATUS ! Global status * Local Variables: CHARACTER*20 ITEM INTEGER PSID ! Private item storage *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Default return value OARG = ADI__NULLID * Extract the arguments CALL ADI_GET0C( ARGS(3), ITEM, STATUS ) * Locate the BDI private storage for the item CALL BDI0_LOCPST( ARGS(1), ITEM, .FALSE., PSID, STATUS ) IF ( PSID .NE. ADI__NULLID ) THEN * Unmap the item CALL BDI1_UNMAP_INT( ARGS(1), ARGS(2), PSID, STATUS ) * Release the item CALL ADI_ERASE( PSID, STATUS ) END IF * Report any errors IF ( STATUS .NE. SAI__OK ) CALL AST_REXIT( 'BDI1_UNMAP', STATUS ) END SUBROUTINE BDI1_UNMAP_INT( BDID, HFID, PSID, STATUS ) *+ * Name: * BDI1_UNMAP_INT * Purpose: * Unmap an item given its private storage location * Language: * Starlink Fortran * Invocation: * CALL BDI1_UNMAP_INT( BDID, HFID, PSID, STATUS ) * Description: * Unmap an item given its private storage location. If the data is not * directly mapped to the file and the access mode is not read then an * optional WriteBack function is invoked. * Arguments: * BDID = INTEGER (given) * ADI identifier to top level BDI object * HFID = INTEGER (given) * The ADI identifier of the HDS file object * PSID = INTEGER (given) * ADI identifier to private storage * STATUS = INTEGER (given and returned) * The global status. * Examples: * {routine_example_text} * {routine_example_description} * Pitfalls: * {pitfall_description}... * Notes: * {routine_notes}... * Prior Requirements: * {routine_prior_requirements}... * Side Effects: * {routine_side_effects}... * Algorithm: * {algorithm_description}... * Accuracy: * {routine_accuracy} * Timing: * {routine_timing} * External Routines Used: * {name_of_facility_or_package}: * {routine_used}... * Implementation Deficiencies: * {routine_deficiencies}... * References: * BDI Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/bdi.html * Keywords: * package:bdi, usage:private * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 9 Aug 1995 (DJA): * Original version. * {enter_changes_here} * Bugs: * {note_any_bugs_here} *- * Type Definitions: IMPLICIT NONE ! No implicit typing * Global Constants: INCLUDE 'SAE_PAR' ! Standard SAE constants INCLUDE 'ADI_PAR' INCLUDE 'DAT_PAR' * Arguments Given: INTEGER BDID,HFID,PSID * Status: INTEGER STATUS ! Global status * Local Variables: CHARACTER*3 MSYS ! Mapping system CHARACTER*6 MODE ! Mapping mode INTEGER WB_CB ! WriteBack function LOGICAL THERE ! Object exists? *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Get mapping mode CALL ADI_CGET0C( PSID, 'MapSystem', MSYS, STATUS ) * Get mode CALL ADI_CGET0C( PSID, 'Mode', MODE, STATUS ) * Has a WriteBack function been provided? CALL ADI_THERE( PSID, 'WriteBack', THERE, STATUS ) IF ( THERE ) THEN * Get writeback address CALL ADI_CGET0I( PSID, 'WriteBack', WB_CB, STATUS ) * Invoke the write back CALL BDI1_UNMAP_WB( %VAL(WB_CB), BDID, HFID, PSID, STATUS ) * Issue warning because data mapped for update or write access is not * being handled cleanly ELSE IF ( MODE .NE. 'READ' ) THEN CALL MSG_PRNT( 'WARNING : Altered data cannot be written '/ : /'back to HDS file' ) END IF * Force map count to zero CALL ADI_CPUT0I( PSID, 'MapCount', 0, STATUS ) * Report any errors IF ( STATUS .NE. SAI__OK ) THEN CALL AST_REXIT( 'BDI1_UNMAP_INT', STATUS ) END IF END SUBROUTINE BDI1_UNMAP_WB( WRITEB, BDID, HFID, PSID, STATUS ) *+ * Name: * BDI1_UNMAP_WB * Purpose: * Invoke a WriteBack function * Language: * Starlink Fortran * Invocation: * CALL BDI1_UNMAP_WB( WRITEB, BDID, HFID, PSID, STATUS ) * Description: * Invokes a WriteBack function to change memory data back to the file * representation immediately prior to it being written to file. * Arguments: * WRITEB = EXTERNAL (given) * The WriteBack procedure * BDID = INTEGER (given) * ADI identifier to top level BDI object * HFID = INTEGER (given) * The ADI identifier of the HDS file object * PSID = INTEGER (given) * ADI identifier private storage * STATUS = INTEGER (given and returned) * The global status. * Examples: * {routine_example_text} * {routine_example_description} * Pitfalls: * {pitfall_description}... * Notes: * {routine_notes}... * Prior Requirements: * {routine_prior_requirements}... * Side Effects: * {routine_side_effects}... * Algorithm: * {algorithm_description}... * Accuracy: * {routine_accuracy} * Timing: * {routine_timing} * External Routines Used: * {name_of_facility_or_package}: * {routine_used}... * Implementation Deficiencies: * {routine_deficiencies}... * References: * BDI Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/bdi.html * Keywords: * package:bdi, usage:private * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 9 Aug 1995 (DJA): * Original version. * {enter_changes_here} * Bugs: * {note_any_bugs_here} *- * Type Definitions: IMPLICIT NONE ! No implicit typing * Global Constants: INCLUDE 'SAE_PAR' ! Standard SAE constants * Arguments Given: EXTERNAL WRITEB INTEGER BDID, HFID, PSID * Status: INTEGER STATUS ! Global status *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Invoke write back CALL WRITEB( BDID, HFID, PSID, STATUS ) END